doing a supermarket shop I find most people are responsible and considerate, keeping the required 2 meter distance in queues and in the aisles.
Whenever I see someone browsing in a section I want to visit I stand and wait for them to leave before moving in and picking what I want - only for some inconsiderate person to blindside me from behind and appear at my shoulder to reach over and make their selection...barely half a meter away and sometimes even nearer!
For some reason the cheese section seems to be the most dangerous place for this!
This is worse than my second bugbear where, in a queue I stay a good 2 meters away from the person in front but I'm aware of the person behind me getting closer and closer and "closing the gap" to a meter or less!
What can you do apart from carrying a two meter bamboo cane around and warning them to keep back???